Add time:08/09/2019         Source:sciencedirect.com

Reactions of WVI and MoV chlorides with azoxybenzene yield ionic species of WVI and MoVI oxychlorides in which the cation is a protonated azobenzene. The reaction between MoCl5 or MoOCl4 and azoxybenzene gives, after extraction with methylene chloride—ethanol mixture, the complex [trans-MoOCl4(OC2H5)]− [C12H10N2H]+. In contrast, WOCl4 reacts with azoxybenzene to give a stable non-ionic adduct in which the organic moiety is coordinated through its oxygen atom trans to the WO bond. Several complexes of substituted azoxybenzene having similar structures are described.

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